/Engine/Source/Developer/CollectionManager/Public/ICollectionManager.h
Gets the method by which the specified collection stores its objects (static or dynamic)
true if the status info was filled in. If false, GetLastError will return a human readable string description of the error.
bool GetCollectionStorageMode ( [FName](API\Runtime\Core\UObject\FName) CollectionName, [ECollectionShareType::Type](API\Developer\CollectionManager\ECollectionShareType\Type) ShareType, [ECollectionStorageMode::Type](API\Developer\CollectionManager\ECollectionStorageMode\Type) & OutStorageMode ) const